Thoughts on system properties for startup

[Rod Widdowson]

> For Windows, I think one
> function of the app ctx initializer will need to be the population of
> an idp.home.normalized property which is idp.home with backslashes
> replaced with forwardslashes. 

There may be and edge case here in which you have to consider the "Dos
device name" (c: or d: or whatever).  I'd recommend to not worry about this
at this stage - we can always instruct people who are cute to add symbolic
links of mount points.